package string;

public class StringBuilderTest02 {
    public static void main(String[] args) {
        String str = "好好学习java";

        StringBuilder builder = new StringBuilder(str);
        builder.append("，为了找个好工作");
        System.out.println(builder);

        builder.replace(9,16,"就是为了改变世界");
        System.out.println(builder);

        builder.delete(0,8);
        System.out.println(builder);

        builder.insert(0,"活着");
        System.out.println(builder);
    }
}
